Database / Amazon DynamoDB Interview questions
1. What is DynamoDB?
DynamoDB is a fully managed NoSQL database service. It is backed by AWS and provides exciting features like seamless scalability, fast performance, and high reliability over data....
2. List the key features of DynamoDB.
Highly Scalable without any intervention from the user. It has a latency of microseconds.
3. Advantages of using DynamoDB.
Store any amount of data with the unlimited storage provided by the DynamoDB service. High-availability, the data we store replicates over many availability regions....
4. Disadvantages of DynamoDB.
No DB triggers and lack server-side scripts. No table joins.
5. What are the APIs provided by Amazon DynamoDB?
UpdateTable CreateTable DescribeTable DeleteTable PutItem ListTables UpdateItem BatchWriteItem GetItem Query DeleteItem Scan BatchGetItem.
6. How does Dynamo DB work internally?
Dynamo DB uses B-trees and Hashing techniques to manage data. When you enter data, it is first distributed into different partitions using hashing then the data is stored in a particular partition by initializing it with a key....
